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2012 International Conference on Computational Problem-Solving (ICCP)最新文献

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Analysis of the latency of SIP phone based on the embedded system 基于嵌入式系统的SIP电话延迟分析
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384222
Hong Pang, Min. Wang, Kewei Chen
{"title":"Analysis of the latency of SIP phone based on the embedded system","authors":"Hong Pang, Min. Wang, Kewei Chen","doi":"10.1109/ICCPS.2012.6384222","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384222","url":null,"abstract":"Recently, the rapid development of VoIP has attracted considerable attention. However, VoIP service exposes weakness on voice quality such as delay and jitter. So it is helpful to improve the quality of VoIP service by mitigating time latency and jitter. In this paper, VoIP phone is implemented by open source software components using the Session Initiation Protocol (SIP) based on embedded systems. Then we analyze the reasons causing delay during the conversation between two VoIP phones which are implemented using open source software components, and propose a new scheme in which we increase the frequency of DMA buffer triggering interruption to reduce the latency, in accordance with the characteristics of the hardware. Finally, the experimental results verify the feasibility of the work.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123259235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Dictionary learning with weighted stochastic gradient descent 加权随机梯度下降法的字典学习
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384229
Lang Chen, Jianjun Wang
{"title":"Dictionary learning with weighted stochastic gradient descent","authors":"Lang Chen, Jianjun Wang","doi":"10.1109/ICCPS.2012.6384229","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384229","url":null,"abstract":"A vector signal can be sparsely represented by a linear combination of small number of atoms in a dictionary. Many works focused on finding this dictionary by adopting a learning point-of-view. We present a new dictionary learning method with Weighted Stochastic Gradient Descent (WSGD). We construct a novel cost function by introducing a weighting matrix and solve this problem by stochastic gradient descent. It is demonstrated from synthetic experiments that our method have a good performance in signal representation capability and the ability to recover the original dictionary.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129394554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
VUI system of the portable maintenance aids based on cloud computing 基于云计算的便携式维护辅助工具VUI系统
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384258
Huang Wei, Song Xincun
{"title":"VUI system of the portable maintenance aids based on cloud computing","authors":"Huang Wei, Song Xincun","doi":"10.1109/ICCPS.2012.6384258","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384258","url":null,"abstract":"One of the most important problems of the voice user interface (VUI) design on portable maintenance aids (PMA) is the conflict between the complex speech recognition algorithms and the limited resource of PMA. To resolve this conflict, a VUI system based on cloud computing has been designed. This system adopts the speech recognition server on the background cloud computing platform to support the voice user interface in the foreground PMA. Compared with traditional VUI system, this system puts the complex speech recognition work to the background cloud computing platform, so that the computational burden of the foreground device has been reduced, which improves the recognition efficiency greatly, this improvement is particularly outstanding in the complex maintenance noise environment.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129728533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Optimizing appropriate two probable Value method by adaptive genetic algorithm 采用自适应遗传算法优化合适的两种可能值方法
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384285
Caijun Pan, Shiqi Cao, Kai Zheng, Zhiming He
{"title":"Optimizing appropriate two probable Value method by adaptive genetic algorithm","authors":"Caijun Pan, Shiqi Cao, Kai Zheng, Zhiming He","doi":"10.1109/ICCPS.2012.6384285","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384285","url":null,"abstract":"Phased array antenna uses phase shifters to change the beam direction, thereby introducing the periodic quantization lobe,and raising the peak sidelobe level. The appropriate two probable Value (A2PV) can effectively suppress the parasitic lobe. But the A2PV method result is an average optimum of a statistical sense. The peak sidelobe is random and has large variance. This paper introduces the adaptive genetic algorithm(AGA) to optimize the A2PV result. It can effectively suppress the parasitic sidelobes, reduce the peak sidelobe, and determine the scanning wave control code. The simulation results show that AGA can achieve a stable and better feed distribution.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129324916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Self-balancing robot pose estimated based on the adaptive Kalman filter 基于自适应卡尔曼滤波的自平衡机器人姿态估计
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384236
Zhu Jia-xiong, Chang Feng
{"title":"Self-balancing robot pose estimated based on the adaptive Kalman filter","authors":"Zhu Jia-xiong, Chang Feng","doi":"10.1109/ICCPS.2012.6384236","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384236","url":null,"abstract":"This paper proposed a new method by which the error of two self-balancing robot sensors was reduced and avoiding conventional Kalman filter can not meet real-time modulation. In the paper, Correction algorithm can come out real-time robot posture in the right way according to the characteristics of navigation sensor error from the iteration of nonlinear least-squares error model based on the method Adaptive Kalman Filter. By computer simulation, an error through the gyro and accelerometer has been corrected. Kalman filter fused the data of gyroscope and accelerometer adaptation, and errors of the sensors pose estimation was corrected. The test results and simulation proved that this method of reducing posture estimation error is feasible and effective, and can achieve better accurate estimates inexpensively.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130595820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Single layer reflectarray with modified cross loop element for wideband applications 用于宽带应用的带有改进交叉环路元件的单层反射天线
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384325
Quan Wang, Z. Shao, Y. Cheng, Pengkai Li, Long Li
{"title":"Single layer reflectarray with modified cross loop element for wideband applications","authors":"Quan Wang, Z. Shao, Y. Cheng, Pengkai Li, Long Li","doi":"10.1109/ICCPS.2012.6384325","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384325","url":null,"abstract":"A Ka-band reflectarray consists of modified cross loop is investigated in this paper. The reflectarray consists of 30 × 30 unit cells and covering an area of 15cm × 15 cm. The unit cell is composed of a solid cross inside and a cross loop outside. Varying the lengths of the cross can lead to nearly 550o linear phase shift curve. Using this technique, a single layer reflectarray that has a wider bandwidth and much more fabrication tolerance compared with conventional single-layer reflectarrays, fabricated and measured. The reflectarray configuration parameters are chosen through aperture efficiency optimized calculation. And the simulated gain of 31.7 dB and aperture efficiency of 46.7% are predicted at the center 32 GHz, respectively. 1.5 dB gain bandwidth close to 17% were achieved, which is better than the reflectarray with patch cells. This new reflectarray antenna is especially useful for millimeter-wave broadband applications.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128622298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An efficient trust model for fault-tolerant and intrusion-tolerant mechanism of P2P network 一种有效的P2P网络容错与入侵机制信任模型
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6383733
Xu Jie, Sun Jian, Yan Jing, Zhao Hui Ping
{"title":"An efficient trust model for fault-tolerant and intrusion-tolerant mechanism of P2P network","authors":"Xu Jie, Sun Jian, Yan Jing, Zhao Hui Ping","doi":"10.1109/ICCPS.2012.6383733","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6383733","url":null,"abstract":"The open applications makes P2P network has many security problems. In order to improve the performance of network, and to ensure the quality of services, this paper proposes a trust model for fault-tolerant and intrusion-tolerant Mechanism of P2P networks. In this model, a new trust evaluation and management mechanism have been studied, and an updating method of the trust degree has been described. By an incentive mechanism, the nodes of network can be encouraged to provide reliable service positively. Finally, the results of simulations and analyses show that the trust mechanism is effective and it can improve the reliability and sustainability of P2P networks.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126811009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Broadband LTCC transition from coaxial connector to stripline for 60GHz application 宽带LTCC转换从同轴连接器到带状线的60GHz应用
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384277
L. Xia, R. Xu
{"title":"Broadband LTCC transition from coaxial connector to stripline for 60GHz application","authors":"L. Xia, R. Xu","doi":"10.1109/ICCPS.2012.6384277","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384277","url":null,"abstract":"A new coaxial-to-stripline transition based on low temperature co-fired ceramic (LTCC) is proposed and experimentally verified. An additional multilayer dielectric cavity is embedded in the LTCC substrate to improve the impedance and field matching and therefore achieve a wide bandwidth. The measurement results for a back-to-back structure show an a return loss better than 10 dB up to 67GHz.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"455 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125793254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
An improved joint dictionary training method for single image super resolution 单幅图像超分辨率的改进联合字典训练方法
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384315
L. Zeng, Xiaofeng Li, Jin Xu
{"title":"An improved joint dictionary training method for single image super resolution","authors":"L. Zeng, Xiaofeng Li, Jin Xu","doi":"10.1109/ICCPS.2012.6384315","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384315","url":null,"abstract":"Research on image statistics suggests that image patches can be well represented as a sparse linear combination of elements from an appropriately over-complete dictionary. In this paper, an improved joint dictionary training scheme is introduced for the single image super resolution. By using different weight factors, the scheme balances two dictionaries in the high- and low- resolution spaces in the training to achieve good reconstructed images. A K-SVD algorithm is applied to learn the dictionaries. Sparse representations of low-resolution image patches are used to reconstruct the high-resolution image patches. From the experiment results, the proposed scheme outperforms the classic bicubic interpolation and neighbor embedding learning based method both qualitatively and quantitatively.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129972485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A miniaturized high out-band suppression low-pass filter based on the lumped circuit model using LTCC technology 基于LTCC技术的集总电路模型的小型化高带外抑制低通滤波器
2012 International Conference on Computational Problem-Solving (ICCP) Pub Date : 2012-12-24 DOI: 10.1109/ICCPS.2012.6384240
Xiao Huo, Peng Wang
{"title":"A miniaturized high out-band suppression low-pass filter based on the lumped circuit model using LTCC technology","authors":"Xiao Huo, Peng Wang","doi":"10.1109/ICCPS.2012.6384240","DOIUrl":"https://doi.org/10.1109/ICCPS.2012.6384240","url":null,"abstract":"Low temperature co-fired ceramic (LTCC) is an ideal packaging technology in realizing miniaturization of microwave components. In this paper, A Miniaturized High Out-band Suppression Low-pass Filter (LPF) is designed, which is based on classical filter design theory and LTCC technology. The pass-band of the low-pass filter we attention is from 1900MHz to1990MHz, which is using in UMTS (Band I). The proposed LPF has a high performance with an insertion loss lower than 0.5 dB in pass band, a high out-band suppression more than 30 dB (at 3.3-3.8 GHz). And the VSWR of input and output port is less than 1.2. The whole volume of final three-dimension model is 2.0mm×1.1mm×0.5mm.","PeriodicalId":321908,"journal":{"name":"2012 International Conference on Computational Problem-Solving (ICCP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121147955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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